Akai LCT3285TAJ, Service Manual, Page: 86 / 131

Note (3) The specified power supply current is under the conditions at Vcc = 5 V, Ta = 25 ± 2 ºC, f
v
= 60 Hz,
whereas a power dissipation check pattern below is displayed.
3.2 BACKLIGHT INVERTER UNIT
3.2.1 CCFL (Cold Cathode Fluorescent Lamp) CHARACTERISTICS (
Ta = 25 ± 2 ºC)
Value
Parameter Symbol
Min. Typ. Max.
Unit Note
Lamp Voltage V
W
- 1280 -
V
RMS
I
L
= 4.5mA
Lamp Current I
L
4.0 4.5 5.0
mA
RMS
(1)
- - 2450
V
RMS
(2), Ta = 0 ºC
Lamp Starting Voltage V
S
- - 2360
V
RMS
(2), Ta = 25 ºC
Operating Frequency F
O
40 - 70
KHz (3)
Lamp Life Time L
BL
50,000 60,000 - Hrs (4)
Active Area
c. Vertical Stripe Pattern
R
R
R
R
R R
R
R
G
G
G
G
B
B
B
B
B
B
G
G
G
G
B
B
B
B
R
R
Active Area
Active Area
a. White Pattern b. Black Pattern
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